Compression Tests on Remodeling Lishi Loess

Abstract

Lishi loess is often used as a building foundation and roadbed filling, the property changed obviously after compaction. In order to reveal the compression characteristic variation, the compression test were conducted under a series of controlling the degree of compaction and moisture content conditions, discussion on the impact of pressure compaction degree and moisture content about compression characteristics of Lishi loess. Some test results are got: â‘  When the compaction degree is 90%, with the increasing of moisture content, compression modulus after the first increase and then decrease; When the compaction degree is 93%ã€95%, the compression modulus reduce significantly; â‘¡ Any moisture content of Lishi loess, with degree of compaction increasing the compression modulus increases and then decreases after. Analysis that: â‘  For different compaction degree Lishi loess, moisture content is different, the compression of soil is different; But the moisture content closer to optimum moisture content, the smaller difference of compression between the soil; â‘¡ For different moisture content of Lishi loess, the compaction degree is different, the compression of soil is also different; When the degree of compaction is 93%, the compression modulus of soil maximum, the compression minimum, resistance to compression is the strongest; â‘¢ For different moisture content of Lishi loess, relations of compression modulus and degree of compaction can used 2 times polynomial Es=aK2+bK+cfitting.